TM 55-1930-209-14&P-3 Table 3-4.  ROWPU System Valves (continued) 2-in. R07 ROWPU space -in BRINE THROTTLE VALVE; 2-way brine discharge line adjusts brine flow rate throttling so that product water valve is 1/3 of seawater flow. Product water flow is controlled by adjusting valve RO7 and HP pump diesel engine speed 3/4-in.   RO8 ROWPU space -bottom CARTRIDGE FILTER DRAIN; 2-way of cartridge filter assembly for taking filtered seawater ball valve samples and draining cartridge filter assembly 3/4-in.   RO9 ROWPU space -on end PRODUCT WATER SAMPLING; 2-way of each pressure tube for sampling product water ball valve in RO block pressure tube 4-in.   RO10 Void 2 starboard - MEMBRANE CLEANING gate valve above seawater pump SOLUTION RECIRCULATION; allows membrane cleaning solution to recirculate through seawater pumps Label Identification Type Valves Location and Valve Function 3-in. RO11 ROWPU space -in CARTRIDGE FILTER TO HIGH gate valve HP pump suction line PRESSURE PUMP; Allows filtered seawater from cartridge filter assembly to flow to HP pump 3-in.   RO12 ROWPU space -in- BRINE TO OVERBOARD gate valve board of pretreatment DISCHARGE; allows brine to skid flow overboard from RO block when making product water 3/4-in.   RO13 ROWPU space -near MEMBRANE CLEANING 2-way membrane cleaning SOLUTION RETURN; allows flow ball valve solution drum of membrane cleaning solution back to drum 3/4-in.   RO14 ROWPU space -near MEMBRANE CLEANING 2-way membrane cleaning SOLUTION INPUT; allows ball valve solution drum membrane cleaning solution to flow from drum 3-in.   RO15 ROWPU space -be- PRODUCT WATER TO STORAGE gate valve tween RO block and TANKS; allows product water HP pump from RO block to flow to drinking water storage tank 3-in.   RO16 ROWPU space -between HIGH PRESSURE PUMP BYPASS; gate valve RO block and HP pump allows flow of membrane cleaning solution to RO block bypassing HP pumps 1/4-in.   RO17 ROWPU space -in BRINE SAMPLING; for 2-way brine discharge piping taking samples of brine ball valve near valve RO7 output from RO block 3-in.   R018 ROWPU space -in SEAWATER TO ROWPU; gate valve pretreatment skid allows flow of seawater to seawater input piping ROWPU pretreatment skid Table 3-2.  ROWPU System Valves (continued) 3-3